Scene Analysis for Improved Eye Tracking

1. An eye tracking method comprising: receiving, by a computing device, gaze direction information for at least one eye from an eye-facing sensor; receiving, by the computing device, digital scene information from a digital camera, wherein the digital camera is oriented to capture the digital scene information from a scene visible by the at least one eye; determining, by the computing device, based on the gaze direction information, a detected gaze target within the digital scene information; analyzing, by the computing device, the digital scene information to identify one or more potential gaze targets within the digital scene information, wherein the one or more potential gaze targets comprise one or more of: a stationary gaze target within the digital scene information; a moving gaze target within the digital scene information; or an accelerating gaze target within the digital scene information; and selecting, by the computing device, a selected gaze target among the one or more identified potential gaze targets, wherein the selected gaze target has a position within the digital scene information, and wherein the selected gaze target position is within an error boundary surrounding the detected gaze target.

2. The eye tracking method of claim 1 , wherein the analyzing, by the computing device, the digital scene information to identify one or more potential gaze targets within the digital scene information comprises performing object recognition within the digital scene information to thereby determine potential gaze targets comprising recognized objects.

3. The eye tracking method of claim 1 , wherein the analyzing, by the computing device, the digital scene information to identify one or more potential gaze targets within the digital scene information comprises identifying one or more sets of related graphical features within the digital scene information to thereby determine potential gaze targets comprising sets of related graphical features.

4. The eye tracking method of claim 1 , wherein the selected gaze target comprises the moving gaze target, and wherein the moving gaze target has a velocity that substantially matches detected gaze target velocity.

5. The eye tracking method of claim 1 , wherein the selected gaze target comprises the accelerating gaze target, and wherein the accelerating gaze target has an acceleration that substantially matches detected gaze target acceleration.

6. The eye tracking method of claim 1 , further comprising determining one or more of detected gaze target velocity or detected gaze target acceleration based on one or more of detected gaze target vector history or an eye mechanical model simulator.

7. The eye tracking method of claim 1 , wherein selecting, by the computing device, the selected gaze target comprises dynamically assigning weights to a plurality of potential gaze targets, and using the dynamically assigned weights to select the selected gaze target.

8. The eye tracking method of claim 1 , further comprising modifying, by the computing device, the detected gaze target to comprise the position of the selected gaze target, and determining, by the computing device, based on the modified detected gaze target, augmented reality information for display.

9. The eye tracking method of claim 1 , further comprising modifying, by the computing device, the detected gaze target to comprise the position of the selected gaze target, and applying, by the computing device, the modified detected gaze target as a user input to control at least one computing device function.

10. The eye tracking method of claim 1 , wherein the digital camera has one or more of a default frame rate or a default resolution, and further comprising operating, by the computing device, the digital camera at one or more of a reduced frame rate, a reduced resolution, an enhanced frame rate, or an enhanced resolution, to capture the digital scene information, wherein the reduced frame rate is lower than the default frame rate, wherein the reduced resolution is lower than the default resolution, wherein the enhanced frame rate is higher than the default frame rate, and wherein the enhanced resolution is higher than the default resolution.

11. The eye tracking method of claim 1 , wherein the gaze direction information and the digital scene information, respectively, comprise real time gaze direction information and real time digital scene information, and further comprising modifying the detected gaze target in real time as the real time gaze direction information and real time digital scene information are received.

12. A head mounted device, comprising: a digital camera oriented to capture real time digital scene information from a scene visible by at least one eye; an eye-facing sensor adapted to detect real time gaze direction information for the at least one eye; a processor; a memory; and an eye tracking accuracy enhancer stored in the memory and executable by the processor, wherein the eye tracking accuracy enhancer is configured to: receive the real time gaze direction information from the eye-facing sensor; receive the real time digital scene information from the digital camera; determine, based on the gaze direction information, a detected gaze target within the real time digital scene information; analyze the real time digital scene information to identify one or more potential gaze targets within the real time digital scene information, wherein the one or more potential gaze targets comprise one or more of: a stationary gaze target within the real time digital scene information; a moving gaze target within the real time digital scene information; or an accelerating gaze target within the real time digital scene information; and select a selected gaze target among the one or more identified potential gaze targets, wherein the selected gaze target has a position within the real time digital scene information, and wherein the position of the selected gaze target is within an error boundary surrounding the detected gaze target.

13. The head mounted device of claim 12 , wherein the selected gaze target comprises the moving gaze target, and wherein the moving gaze target has a velocity that substantially matches detected gaze target velocity.

14. The head mounted device of claim 12 , wherein the selected gaze target comprises the accelerating gaze target, and wherein the accelerating gaze target has an acceleration that substantially matches detected gaze target acceleration.

15. The head mounted device of claim 12 , wherein the eye tracking accuracy enhancer is configured to select the selected gaze target at least in part by dynamic assignment of weights to a plurality of potential gaze targets.

16. The head mounted device of claim 12 , further comprising: a display; and an augmented reality information provider adapted to provide augmented reality information for real time overlay on the display; wherein the eye tracking accuracy enhancer is adapted to modify the detected gaze target to comprise the position of the selected gaze target, and to provide the modified detected gaze target to the augmented reality information provider.

17. The head mounted device of claim 12 , wherein the eye tracking accuracy enhancer is adapted to modify the detected gaze target to comprise the position of the selected gaze target, and to provide the modified detected gaze target as a user input to control at least one head mounted device function.

18. The head mounted device of claim 12 , wherein the digital camera has one or more of a default frame rate or a default resolution, and wherein the head mounted device is adapted to operate the digital camera at one or more of a reduced frame rate, a reduced resolution, an enhanced frame rate, or an enhanced resolution, to capture the digital scene information, wherein the reduced frame rate is lower than the default frame rate, wherein the reduced resolution is lower than the default resolution, wherein the enhanced frame rate is higher than the default frame rate, and wherein the enhanced resolution is higher than the default resolution.

19. A non-transitory computer readable storage medium having computer executable instructions executable by a processor, the instructions that, when executed by the processor, cause the processor to: receive gaze direction information for at least one eye from an eye-facing sensor; receive digital scene information from a digital camera, wherein the digital camera is oriented to capture the digital scene information from a scene visible by the at least one eye; determine, based on the gaze direction information, a detected gaze target within the digital scene information; analyze the digital scene information to identify one or more potential gaze targets within the digital scene information, wherein the one or more potential gaze targets comprise one or more of: a stationary gaze target within the digital scene information; a moving gaze target within the digital scene information; or an accelerating gaze target within the digital scene information; and select a selected gaze target among the one or more identified potential gaze targets, wherein the selected gaze target has a position within the digital scene information, and wherein the selected gaze target position is within an error boundary surrounding the detected gaze target.